function $(id){return document.getElementById(id)}
window.onload = function(){
 $("kf-nav").onclick = function(e){
  var src = e?e.target:event.srcElement;
  if(src.tagName == "H3"){
   var next = src.nextElementSibling || src.nextSibling;
   next.style.display = (next.style.display =="block")?"none":"block";
  }
 }
}


